Brush adjustment for carpet-sweepers.



FQ C. MASON: J. W. SHANAHAN. BRUSH ADJUSTMENT POR CARPET SWEBPIERS.v

APPLIOATION FILED 1120.11, 1911.

1,038,170. Patented sept. 10,1912.

@x2-mmm 'lig- EL i @i @www UNITED sTATEs PATENT OFFICE.

FRANCIS C. MASON AND JOHN W.

SHANAIIAN, or GRAND RAPIDS, MICHIGAN, ASSIGN- ons To BISSELL CARPETSWEEPER co., or GRAND RAPIDS, MICHIGAN, A coIreoitA- TION OF MICHIGAN.

BRUSH ADJUsTivIENT'ron CARPET-swnnrnns.

To all whom it may concern:

Beit known that we, FRANCIS C. MASON and JOHN W. SHANAHAN, citizens of the United States of America, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Brush Adjustment for Carpet-Sweepers; and we do hereby declare the following to be a'full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

.Our invention relates to improvements in brush adjustment for carpet sweepers and its object is to provide a reliable and easily operated means for vertically adjusting the brush of a carpet sweeper relative to the balance of the device and to provide the same with various new and useful features as hereinafter more fully described and particularly pointed out in the claims reference being had to the accompanying drawings, in which: v

Figure `1 is an end elevation of a carpet sweeper embodying our invention with portions broken away; Fig. 2 a detail of the the gures. l represents the case of a carpet sweeper;

a the movable ends ofthe same in elevation with other parts broken away; and Fig. 3 an inclined section on the line--of Fig. 1.

Like numbers refer to like parts lin all of 2 the bail; 3 the bail guard; 4 the end guard and 5 the brush shaft ordinarily constructe In. the form shown in the drawings,l our device consists of arms pivoted `on the end guards 4 as at 7 and swmging vertically in close relation to the inner surface thereof arms being opposite the axis of the brush shaft and carrying the pintles 8, on which the brushshaft is journaled. Pivotally connected at its lower end to the arm 6, preferably upon thepintle 8, is an adjusting and supporting member 9, extending'u ward and swinging in a vertical plane. This member is provlded near its of a carpet sweeper as Patented Sept. 10, 1912.

i Application led December 11, 1911. Serial No. 665,013.

upper end. with a retaining pin 10, traversing an eccentric segmental recess in the brush guard 3, and engaging any one of a series of openings in the bottom of the recess whereby the brush pintle is vertically adjusted step by step by shifting the pin in the said'openings. The recess retains the pin and prevents the support member from dropping down while the pin is being shifted. On the upper end of this member is an outwardly turned thumbpiece 11, for manually operating the same. @Attachedto the bail guard and extending outside of this supporting member is a segmentalguard 12, which retains the member 9, in proper relation to the bail guard.

From the foregoing description the operation of our device is obvious without further explanation.

What we claim is j 1. In a carpet sweeper the combination of an arm pivoted at one end, a pintle carried by the other end of the arm on which pintle the brush shaft' is journaled, a supporting and adjusting member pivoted on the pintle at the lower end, a bailguard having a series of openings therein at different vertical positions and a pin in the supporting member adapted to enter any one of the `said openings.

2. In a'carpet sweeper the combination of a supporting and adjusting member vconnected to the pintle on which the brush shaft is journaled and extendingmpward therefrom, a bail guard having an eccentric recess and a series of openings in the bottom of the recesses, a pin in said member traversing the recess and engagingo any one of the openings and a guard attached to thebail guard and extending outside of said member.

-3. In a carpet sweeper the combination of an armvpivoted at one end to the end guard of the sweeper and Iopposite the axis of the brush "shaft, a pintle fixed in the arm on which pintle the' brushshaft is journaled, a supporting and adjusting member pivoted on the pintle at its lower end and extending upward therefrom, a pin in said member, a In testimony where9f we an'x our signabail guard having a segmental recess travtures in presence of two Witnesses. ersed by the pin and openings in the bot- FRANCIS C. MASON.

tom of the recess' to recelve the pin and a l JOHN WSHANAHAN. 5 segmental guard attached to the brush Witnesses:

guard and extending outside of said member PALMER A. JONES, to retain the same with the pin in the recess. HAROLD O. VAN ONTWERP. 

